I am 31 years old and have mild schizophernia and have been taking Zypreya (olazapine) 15 mg and Zolofot (sertraline) 25 mg for the past 3 years. My psychitratist only prescribea these medicines. I feel sleepy after taking the medicines and snores every night. I believe CBT or other non-medicinal treatment would help me to improve my conditions. I want to know if there is any latest research on this subject.